Machine for winding filament or yarn packages



Dec. 20, 1960 L. J. R. WIERING 2,965,322

MACHINE FOR WINDING FILAMENT OR YARN PACKAGES Filed June 7 1956 9Sheets-Sheet 1 Fig.2A

5 HMMMM firromwrs MACHINE FOR WINDING FILAMENT OR YARN PACKAGES FiledJune '7. 1956 Dec. 20, 1960 L. J. R. WIERING 9 Sheets-Sheet 2 Dec. 20,1960 ,J. R. WIERING MACHINE FOR WINDING FILAMENT OR Y ARN PACKAGES 9Sheets-Sheet 3 Filed June '7. 1956 INVENrOR L f R. l/lik/Alc 1972-0 RA/Ers Dec. 20, 1960 L. J. R. WIERING 2,965,322

MACHINE FOR WINDING FILAMENT OR YARN PACKAGES Filed June 7, 1956 9Sheets-Sheet 4 Fig. 5

[A/Vi/VfOl? Z. 7. A. Mew/Ive Dec. 20, 1960 L. J. 'R. WlERlNC-i 2,965,322

MACHINE FOR WINDING FILAMENT OR YARN PACKAGES Filed June 7. 1956 9Sheets-Sheet 5 11v VE/VfOR 4. .72}?- Mile 1N0 Dec. 20, 1960 L. J.-WlERlNG MACHINE FOR WINDING FILAMENT OR YARN PACKAGES Filed June 7.1956 9 Sheds-Sheet e Dec. 20, 1960 J. R. -WIERING MACHINE FOR WINDINGFILAMENT OR YARN PACKAGES Filed June 7. 1956 9 Sheets-Sheet 7 P R M. 03rw R M mm v r m un 1 r A a Dec. 20, 1960 L. J. R. WIERING 5 MACHINE FORWINDING FILAMENT QR YARN PACKAGES Filed June 7. 1956 9 Sheets-Sheet 8,Filed June 7. 1956 13% 1950 1.. J. R. WIERING 2,965,322

MACHINE FOR WINDING FILAMENT OR YARN PACKAGES 9 Sheets-Sheet 9 11vVI/VfOR 1. .Z MFR/Iva Hm M hg il United States Patent MACHINE FORWINDING FILAMENT R YARN PACKAGES Louwrens J. Wiering, Hengelo,Netherlands, assignor to N.V. Hollandse Signaalapparaten, Hengelo,Netherlands Filed June 7, 1956, Ser. No. 589,999

Claims priority, application Great Britain June 8, 1955 11 Claims. (Cl.242--18) The invention relates to a precision yarn winding machine. Anexample of a precision yarn winding machine is shown on page 348 Fig. 2of the second edition of the American Cotton Handbook. In this type ofmachine there is a driven spindle which carries the yarn package whilstthe yarn is guided by a device which moves to and fro along the outersurface of the yarn package in such a way that a cross wind package isproduced. In the usual forms of the precision winder the device whichmoves the yarn to and fro, the so-called yarn guide, is mounted at theend of a rod, the traverse bar, which slides to and fro in a slot or thelike in the swinging traverse frame. This traverse frame must be capableof moving in order to make it possible for the yarn guide to continue toexecute its movement in the immediate vicinity of the outer surface ofthe yarn package as the diameter of this yarn package grows. In theusual precision winding machines, the traverse frame is for this purposecapable of swinging around a shaft which is parallel, or practicallyparallel, to the spindle. This shaft is driven together with the spindleand is capable of rotating in bearings in the frame of the machine aswell as in the traverse frame, without causing rotation of the traverseframe. This shaft carries a device, usually called a traverse-cam, butwhich in fact is a body possessing a slot situated on a cylindricalsurface, this surface being concentrical with the shaft. A projection ofthe traverse rod is situated in the slot of the traverse cam, whilst theslot is shaped in such a way that the rotating traverse cam causes thisprojection, the traverse rod and the yarn guide to move to and fro inthe desired way in the traverse frame. The type of winding is determinedby a suitable choice of the relation between the rotational speed of thespindle and the rotational speed of the shaft carrying the traverse cam.In some winding machines the position of the traverse frame isdetermined by the fact that the smooth and more or less spherical partof the yarn guide rests against the outer surface of the yarn package.In other winding machines, suitable for winding yarns which cannot standfriction, the traverse frame possesses a freely rotatable roller, theso-called roller bail, by means of which this traverse frame restsagainst the yarn package.

The invention relates to a new construction of such a precision windingmachine. According to the invention the relative movement of the spindlecarrying the yarn package and the frame in which the device determiningthe spot where the yarn is wound on the yarn package moves to and fro,this relative movement being necessary in order to allow for the growingdiameter of this yarn package, is a rectilinear translational motion.

The invention embodies various advantages, which will be discussedbelow.

It is desirable, that the traverse frame should exert not more than aslight pressure on the yarn package, this pressure being either constantor varying according to a pre-determined function of the yarn packagediameter. For this purpose, in the usual machines the traverse framemust be perfectly balanced, and must moreover be provided with means tocause the desired pressure to be established. When on a usual windingmachine, a conical yarn package is to be wound, and the traverse frameis provided with a pressure roll by means of which it rests against theyarn package, then the entire length of this roll will rest against agen'eratrix of the conical yarn package in one position of the traverseframe only. In all other positions of the traverse frame the pressureroll Wlll rest against the yarn package, in theory only in one point,and in practice with only a small part of its length. The result of thisis that the density of the package is not the same throughout thispackage. If the traverse frame is not provided with a pressure roll, theyarn guide will move along a generatrix of the yarn package in oneposltion of the traverse frame only; in all other positions of thistraverse frame the yarn guide describes trajectories which deviate froma generatrix, thus causing the pressure exerted by the yarn guide on theyarn package to vary; this is equally undesirable from the point of viewof the formation of a package of constant density. It is desirable forthe density of the package to be constant throughout as inconstantdensity causes difiiculties in uniform dyeing in the case of packageyarn dyeing, whilst, moveover, the forces necessary for unwinding theyarn package over the end will not be: constant, this causing trouble,especially in knitting machines. Further, the usual precision windershave the disadvantage that the forces exerted by the traverse cam on thetraverse rod possess components, the directions of which are such, thatthey result in torques exerted on the traverse frame around the shaft ofthe traverse cam, these torques tending to move the traverse frameeither towards the yarn package or away from this package. The saidforces vary during each complete revolution of the traverse cam and thuscause varying forces to be exerted on the yarn package. Although it istrue that the forces in the direction of the yarn package are to acertain extent counteracted by a device preventing the movement of thetraverse frame towards this package, this device, as a rule, still has aslight backlash, so that it will still permit a slight movement of thetraverse frame, resulting in a part of the said forces being exerted onthe yarn package. Furthermore, this yarn package must, as its diametergrows, push the traverse frame backwards by means of the pressure rollor the yarn guide, as a result of which the yarn package is subjected toall the forces acting on the traverse frame. These forces reach theirmaximum value at the moment at which the direction of the motion of thetraverse bar reverses, and they will cause variations of the density, inthe vicinity of the ends of the package. The disadvantages mentioned areespecially important when monofil nylon and such like yarns are to bewound, as in these cases, owing to the thinness and the smoothness ofthe yarn, the winding machine must satisfy exacting requirements.'Moreover, the usual machine needs a so-called pine-apple attachment inorder to be able to wind a pine-apple cone. This is a disadvantage,because the pine-apple attachment is a device which is subject toserious wear, and which, with its many small parts and its relativelylarge back-lash, limits the permissible rotational speed of the machine.When a precision winding machine is executed according to the invention,the balancing of the traverse frame is, as a rule, superfluous, as it ispossible to cause this frame to execute its motion in a horizontalplane; the traverse cam cannot exert forces on the traverse frame, as aconsequence of which the forces exerted on the yarn package by thetraverse frame show less variation; a roller bail, if such a device ispresent, will continue to rest against a generatrix of the yarn package,independent of the diameter of this package, whilst the trajectory of ayarn guide resting 3 directly on the yarn package coincides"continuously with such a generatrix. Moreover, a winding machineaccording to the invention is capable of winding yarn package of variousforms, especially of winding pine apple cones,

without needing the assistance of deviceswhich' show such heavy wear andsuch large'backlash as theusual pine-apple attachment.

bility of mounting; in a simple way, a transmission gear withcontinuously variable transmission ratio, the transmission ratio ofwhich gear is adjusted, either by the traverse frame Whilst moving awayfrom the yarn package, or-by the spindle whilst moving away from thetraverse-frame, this adjustment being suchthat the yarn speed remainsconstant, or at any rate varies less in accordance with the diameter ofthe yarn package than is the case in a winding machine with a constantrotational speed'of the spindle. Various embodiments of the invention'are illustrated in and hereinafter described with reference to theaccompanying drawings.

Inthesaid drawings:

'Fig. 1 is a plan view of a precision winding machine according to theinvention for the winding of pine-apple cones.

Fig. 1A shows a modified form of a detail of the machine according toFig. 1.

Fig. 2 shows a detail of the traverse'mechanism of the machine accordingto Fig. 1.

Fig. 2A is an enlarged cross sectional view taken along line 2A2A ofFigure 1-.

Fig; 3 shows a precision winding machine for the Winding of cones ofrounded shape.

Fig. 3A is an enlarged cross sectional view taken along line 3A'3A ofFigure 3.

Figs. 4 and 5 show traverse mec anisms of machines operatingwith contant traverse len th.

Figs. 6A and 6B show devices suitable for the purpose of causing thetraverse frame to exert the desirable pressure on the-yarn package inevery position.

The Figures 7 and 8 show precision winding machines according to theinvention with variable speeds of the spindles.

Fig. 9 shows a precision winding machine according to the invention forthe windin of cones which can be unwound in a simple wav from theinside.

Fig. 10 shows a winding machine according to the in vention in which thefulcrum of the lever which drives the traverserod is carried b thetraverse frame.

Fig; 11 shows a modification of the traverse bar driving mechanism.

A machine according to the'invention for the winding of normalpine-apple cones will now be described with reference to Fig. 1. In thisfigure 117 is a spindle, which is rotatable in a first frame 124of themachine, and which carries a holder 116 for a tube on which the yarnpackage 114 is wound. The s indle is driven in the usual way by means ofa belt 125 and a pulley 126. The'yarn to be wound passes to the yarnguide 103 An accidental advantage of the machine according to theinvention is found in the'possi-' through the loop guide, a slub catcherand the tension device, which are not shown in the figure. The yarnguide is mounted at the end of a traverse bar 105. which is capable ofsliding in a primary guide means formed by the trackway 130 of atraverse frame 101. This second frame can be shifted by the yarn packagebuilding up, for which purpose bearing 110 which is fixed to thetraverse frame slides over a bar 111, and the bar 107, which is fixed tothe traverse frame, slides in bearings 108 of It is clear that when thelever 120 swings to and fro about 7 its fulcrum 112, the traverse barand the yarn guide will also move to and fro. In the first frame of themachine there are two guide bars 118, between which a small slide 128 iscapable of -sliding. As may be seen from Figure 2, this slide carriestwo smallrollers .129, 204 one on its lower side and one on its upperside, these rollers being rotatable about vertical shafts. The upperroller 129 is situated in a lower slot of the lever 120 (which has anH-shaped cross section'as shown in Figure 2a) and thus couples the slideto the lever.- The lower roller 204 is situated in the slot 122 of acylindrical body 119 which serves as traverse cam. This body is mountedon, and driven by, the shaft 123, which shaft is driven by the spindle117 by means of the gears 127. When the spindle 117 and the shaft 123are rotating, the body 119 will, by means of the slot 122, move theslide 128 to and frobetween the g'uidebars 118. The slide will thendrive the lever 120,; which consequently the traverse rod decreases asthe traverse frame'is' moved farther from the spindle owing'tothe'for'ces exerted by the yarn package building up. The-rate of thisdecrease, and consequently the shape of the pine-apple cone, aredetermined by the position of the fulcrum-112 of the lever 120. Thenearer the fulcrum 112 19 situated to the spindle, the more acute willthe conical surfaces 113 and of the yam package become. The-ratio of theapexangles of these cones will, moreovenbe-influenced by a displacementof this fulcrum in a direction parallel to the spindle. If only oneshape of yarn package is to be made, the fulcrum can be a fixedshaftWhen, however, it is desirable for the'machine to he capable of windingyarn packages of various forms,- the position of the fulcrum 112 must beadjustable-.- The adjustability of the-fulcrum-112 can beeffected invarious ways As a rule, the changing of theshape of e the yarn packageand the displacing of the fulcrumwilloccur infrequently. ment is to bepreferred.

lever 120, and to mount it, by means of a nut; in an opening in ahorizontal plate fixed to the frame of the machine, and shown in thefigure.

changes in the position of the fulcrum possible within the area in whichthese openings are situated, these openings being arranged according toa simple pattern. It is also possible to mount this fulcrum in themanner illustrated in Figure 1A. Herewith the=-fulcrum is mounted in aslot 31 in a horizontal plate 32,-the slot being perpendicular to thespindle, and the plate itself being adjustable parallel to the spindle,for which purpose it is mounted on supports 35, 36 on the frame of themachine. by means of screws 33 in slots 34 of the said plate 32.

The axes of the roller bail 102 and of the spindle 1-17 are situated inone plane, this plane being parallel to the direction of displacement ofthe traverse frame 1 .11. Consequently the roller bail will be incontact with the yarn package along a generatrix of this packageindependent of the position of the traverse frame, and will be capableof executing the same pressure on all parts of this package.

When the-traverse frame moves in a horizontal direction, as is the casein the machine describedfhalano ing measures are superfluous. 'If, forsome reason, it is desirable that the direction of the displacement ofthe traverse frame should be other than horizontal, balanc'-' ing can beeffected in a simple way.

The forces exerted by the" "driving mechanismof the Hence a simplemethod of adjust- It would be possible, form--- stance, to provide theshaft 112 with a-collar-below the In this plate-a fair- 1y large numberof openings wouldmake the desired traverse bar on the traverse frame inthe direction of the displacement of this frame are considerably lowerthan in the known constructions. This is a result of the fact that theforces resulting from the friction in the slot of the traverse cam, andalso the component perpendicular to the spindle of the force in thisslot at right angles to it do not act on the traverse frame, but on theslide which runs between the guide rods 118. Undesirable forces on thetraverse frame can only originate in the swinging lever 120, and as thisswinging lever executes no motion perpendicular to the spindle, thefriction of the small roller at the lower side of the traverse bar inthe upper slot of this lever can cause no appreciable forces on thetraverse frame which would drive this frame either in the direction ofthe yarn package or in the direction away from it. The angle betweenthis lever and the traverse bar will, moreover, never be so acute as theangle between the traverse bar and the slot in the traverse cam, so thatthe forces exerted on the small roller of the traverse bar will haveonly a slight component in the direction of displacement of the traverseframe. To cause a further reduction in the influence of these slightforces it is to be recommended, that the traverse frame should beprovided with a device of a well-known type permitting the traverseframe to move in the direction away from the spindle only. The form ofsuch a device is immaterial to the invention, and any good friction pawlis suitable for this purpose.

The forces on the traverse frame can be reduced still further bymodification of the driving mechanism of the traverse bar. Thismodification requires that either the one or the other of the twocouplings of the type which permits a relative rotation and slidingmotion of the parts coupled, i.e., the coupling between the saidtraverse bar 105 and the lever 120 or the coupling between the slide 128and the lever 120, is replaced by a coupling of the type which permitsonly a relative rotation of the parts coupled, while the couplingbetween the lever 120 and the first frame 124 is replaced by a couplingwhich not only permits a relative rotation of these parts but at thesame time permits a sliding motion of said lever along its fulcrum. Thislatter coupling may be embodied in the manner illustrated in Figure 1Ain which the lever 120 can slide along the shaft 112 owing to the factthat the lever 126 is provided with a slot 37 which is capable ofsliding along the pin 112. Another possible embodiment of this couplingis used in the machine shown in Figure 3, where the lever 120 slides ina small fork 348 which is rotatable about the pin 112 which projectsfrom the bottom side of this fork.

The way in which the lever 120 is made to move to and fro is immaterialto the invention. The method of driving shown in Fig. 1 is convenient,since it permits the application of the standard form of the traversecam. It would also, however, be possible to drive the swinging lever bymeans of a normal cam disc, or a disc provided with a slot of suitableshape, driven, for instance, by a vertical shaft. It would also bepossible to combine the driving mechanisms of the lever 120 of a numberof winding machines situated vertically above each other. A similarcombined driving of machines situated side by side would also bepossible. It is a disadvantage of such a combined driving of thetraverse movement, that either all spindles of the machines coupled inthis way must be stopped simultaneously, or a special coupling devicemust be mounted, permitting the disconnection of such a lever from thecombined driving mechanism.

For certain applications it is desirable for the yarn package to possessa rounded shape. To form such a shape it is necessary that the decreasein the traverse length should be more than proportional to thedisplacement of the traverse frame. According to the invention this canbe effected by means of a construction in which the traverse frame,whilst being shifted by the yarn package, displaces the fulcrum 112 ofthe lever 120. In this case a construction is preferably applied inwhich the swinging lever slides along the fulcrum 112, because thensmaller forces are exerted on the traverse frame by the device causingthe displacement of the fulcrum. During the said displacement of thefulcrum 112 it must move in the direction of the spindle in accordancewith the movement of the-traverse frame away from the spindle. In Fig. 3a form of such a construction is shown. Part 101 is the traverse framewith the traverse bar 105 driven by the swinging lever 120, this leverbeing capable of sliding in a fork 348 rotatable around a shaft 112.This shaft is carried. by a bell crank lever 343 mounted on a shaft 344,which shaft is rotatable in the frame of the winding machine. The secondarm of this bell crank lever carries a small roller 345, situated in aslot 346 of a plate 347 mounted on the traverse frame. If the slot hasthe shape shown in the figure the position of the fulcrum 112 will notat first change. The machine then winds the yarn package with normalconical ends. As soon, however, as the roller 345 enters the curved partof the slot 346, the lever 343 will move the fulcrum 112 in thedirection of the spindle. The traverse length will then decrease at arate which is higher than would be the case if it were influenced by thedisplacement of the traverse frame only. The shape of the yarn packagecan be influenced in the first place by the shape of the slot 346.Preferably, therefore, the plate 347 is interchangeable. Moreover thefulcrum 112 at the end of the bell crank lever can be made adjustable,for instance by providing this end with a number of openings in whichthe fulcrum 112 can be fixed, whilst in addition it would be possible tomake the position of the shaft 344 carrying the bell crank leveradjustable in the frame of the machine. Fig. 3 shows only one method forautomatically adjusting the fulcrum of the swinging lever 120. Othermethods are, however, feasible. These methods need not result in arounded shape of the yarn packages; many other shapes of yarn packagescan be wound on machines with adjustable fulcrum of the swinging lever.

If it is desirable to form a yarn package with constant traverse length,the machine must be built in another way. It is then no longer possibleto apply the swinging lever 120. Two constructions are suitable for thispurpose. lt would be possible (see Fig. 4) to replace the lever by a barprovided with a slot in its lower side, which is rigidly fixed to thetraverse bar and which cooperates by means of the said slot in its lowerside with the roller or the like at the top side of the slide whichmoves to and fro between its guide bars. The angle between the slottedbar and the traverse bar is preferably adjustable, in order to permitthe winding of various shapes of yarn packages. If this slotted bar isperpen dicular to the direction of displacement of the traverse bar,then the two ends of the yarn package are conical surfaces, thegeneratrixes of which are perpendicular to the surface of the tube onwhich the package is wound. lf the said rod is perpendicular to thespindle, then the end surfaces of the yarn package are planesperpendicular to the spindle. If the slotted bar is ad usted in otherpositions, other shapes of yarn packages will be wound. Fig. 4 shows anexample of such an embodiment. Part 101 is the traverse frame, 105 thetraverse bar, and 120 the slotted bar, mounted on the traverse bar 105and cooperating with the roller on the slide 128 which moves to and frobetween the guide bars 118. The bar 120 is adjustably mounted to thetraverse bar 105 by means of bolts and nuts (not shown) which permit theslotted bar to be adjusted in various positions. To prevent the loadexerted on the traverse bar 105 by the bar 120 from causing the frictionof the traverse bar to increase, the free end of the slotted bar 120 isprovided with a fork 432, which slides over a supporting bar 433 mountedto a guideway 118-in the-frameof the machine said bar remaining duringthis' sliding motion parallel to itself, the drive for this slidingmotion being obtained, for instance, from a traverse cam 119. 'In thisform also,

the slotted bar 120 can have various positions relative to the spindle,and can thus cause the winding of the yarn package with constanttraverse length of various forms.

The bar 120is prevented from turning over by means of a fork 532, whichslides-over a fiat supporting rod in the frame 124. Due to the fact thatthe bar 120 cooperates with the roller 109 at the underside of thetraverse bar, the traverse bar 105 will be moved to and fro withrotation of the traverse cam. The bar 120 is mounted on the slide 128 bymeans of a bolt and nut 533, and can be fixed by means of a second bolt535 in a circular slot, in the position suitable for causing the desiredshapes of the yarn package to be wound.

In the figures the winding machine is shown provided with a pressureroll. It is obvious that this device can be dispensed with if theproperties of the yarn to be wound permits this, in which case the yarnguide is replaced by a kind of convex yarn-guide which is capable ofsliding over the surface of the yarn package.

In the winding machine according to Fig. 1, provided with the swinginglever 120, it would in many cases appear unnecessary to take specialmeasures for pressing the traverse frame against the yarn package. If itis desirable, however, for a predetermined pressure to be exerted on theyarn package in every position of the traverse frame, then this can beeffected in a simple way. In one of the forms of the winding machine acord was fixed to the traverse frame, this cord passing over a ropepulley, a small weight being suspended from it. In this way a constantpressure on theyarn package is obtained. If it is desirable to obtain apressure which is a pre-determined function of the position of thetraverse frame, then it is possible to couple the traverse frame to alever, on which a suitable force is exerted by means of a weight or aspring. Fig; 6A shows a first form of such a device.

A lever 602 rotatable about the fulcrum 603, is coupled by means of alink 601 to the traverse frame 101. The lever 601 is coupled to aspecially shaped sector 604, on which a steel strip rests," whichisconnected to a spring 605. A suitable shape of the sector 604 willcause the traverse frame, whatever its position may be, to exert theforce required for this position on the yarn package. Instead of aspring 605,"a weight suspended from the steel strip can also exert theforce on the lever. In a second form shown in Fig. 68 a part of thetraverse frame 101 sliding over a bar 655 is indicated by 656. Itcarries a small roller 654 on which forces are exerted by means of alever '653,'rotatable about a fulcrum 652. The lever is subjected to atorque by means of a spiral spring 651 mounted in a spring drum 650. Themagnitude of the torque exerted by the spring canbe adjusted by rotatingthe outside of the spring drum. A suitable shape of the lever 653enables the force in the direction of the displacement of the traverseframe to be pro-determined in each position of this frame. It is obviousthat other methods can also be applied, experience, however, has shownthe methods described to be very effective.

Sometimes it is desirable to build a yarn package the traverse lengthofwhich is smallest on the inside and largest on the outside. Such yarnpackages'are specially suitable for unwinding from the inside of thepackage. is also suitable for the 'winding of such yarn packages.

The winding machine. according to the invention A form of the windingmachine according to the invention for this purpose is shown in Fig. 9.This machinecorresponds in general to the machine shown in Fig. 1, withthis difference, however, that the fulcrum 112 about which the lever 120with H-shaped section swings is situated at the same side of thetraverse frame 101 as the spindle. It is obvious that the traverselength increases as the traverse frame 101 moves away from the spindle117, as the distance between the small roller 109 at the lower side ofthe traverse bar 'and the fulcrum 112 about which the lever swings alsoincreases during this'displacement of the traverse frame. machineaccording'to the invention which are described above are also possiblein the case of a machine'according to Fig. 9. 3 It is possible, forinstance, to make the lever 120 slide along the fulcrum 112, this leverbeing rotatably supported on the slide which moves between the guideway118. It is possible, moreover, to displace the fulcrum 112 automaticallyin accordance with the position of the traverse frame, in a similar -wayas has been described with reference to Fig. .3. Finally, it is possibleto regulate the rotational speed of the spindle by means of a methodwhich will be described with reference to Figs. 7 and 8.

The displacement of the fulcrum 112 depending on the displacement of thetraverse frame 101, in the manner 1 described with reference to Fig. 3,can, in the case of certain forms of the yarn package, be effected in asimple way by mounting this fulcrum on the traverse frame 101. Fig. 10shows such a machine. If it is desirable to wind a yarn package thetraverse length of whichis smallest on the inside, then the fulcrum mustbe situated on the' other side of the traverse frame, i.e. theside'where the spindle is situated.

In most cases in modern winding machines the 'limit of the rotationalvelocity of the spindle of a precision winding machine is not determinedby the'properties of the yarn, but by the traverse mechanism. Our newtraverse mechanism permits higher rotational speeds, so that the use ofour newmachine, entails a higher probability of the yarn speed becomingexcessive, when-the yarn Especially in the case of the yarn being woundfrom reels, in which case package reaches its greatest diameter.

the yarn speed must, as a rule, be rather low, it may occur that theyarn speed sets a limit to the rotational speed of the spindle. In thiscase winding at a constant yarn speed is preferable to winding at aconstant speed of the spindle, or at any rate it is desirable that,during the winding of the complete-yarn package, the-speed should bekept nearer to the maximum than in the case of constant spindle velocityyarn speed. The application of friction drives with continuouslyvariable transmission ratio is a known solution for this purposethetransmis-- s1on ratio being adjusted by the traverse frame whilstchanging its position. In the machine according to the invention suchvariable spindle velocity can be obtained in a very simple and effectiveway. A first form of a machine with variable spindle velocity accordingto the invention is shown in Fig. 7. In this machine the spindle 117carries at one end the disc 171, which is capable of I sliding along thespindle, but which, owing to the presence of a key, can not rotate withrespectto this spindle, whilst a spring presses the disc in thedirection-of the shaft 175. Between the shaft and the disc 171 therearetwo balls 173 and 174, enclosed in a ball carriage 172," whichcompletely determines the pasition of these balls, but in which theseballs are freely and universally ro-tat-- able. In the ball carriageshown, every ball is supported between two cup-shaped members 176 inwhich these balls The various forms of the the ball carriage is shiftedfor the purpose of changing the transmission ratio. The ball carriage172 is coupled by means of an arm 177 to the traverse frame 101. Thespring 170 presses disc, ball and shaft together in such a way that,when the shaft rotates, the motion of this shaft is transferred by meansof the two balls to the disc and the spindle of the winding machine. Theshaft is driven at constant velocity by the driving motor of the windingmachine. It is obvious that the transmission ratio of the transmissiongear varies when the position of the traverse frame changes and thatthis transmission ratio decreases, causing the spindle to rotate moresloW- ly in accordance with the increase of the diameter of the yarnpackage. If the yarn speed is restricted to a low value, it is then, asa rule, admissible to arrange the relative position of ball carriage 112and traverse frame 101 in such a way that the yarn speed is keptcompletely constant. In many cases, however, the traverse mechanismwould then obtain excessive rotational velocities when the diameters ofthe yarn package are still small. In such cases the extent of theadaptation is limited, and only such a change in the transmission ratiois possible as would cause the yarn speed to be equal to the maximumadmissible yarn speed when the diameter of the yarn package is largest,and, when the diameter of the yarn package is smallest, would cause arotational velocity of the spindle which does not surpass the maximumrotational velocity permitted by the traverse mechanism. In this casethe point of contact between ball and disc must be situated at adistance from the centre of the disc which is larger than thatseparating the pressure roll from the axis of the spindle. Thetransmission gear provided with balls has the important advantage thatthe balls are capable of free rotation in opposite directions, rollingon disc and shaft. when the ball carriage is displaced for the purposeof changing the transmission ratio. Consequently the traverse frame isnot subjected to noticeable forces exerted by the ball carriage. Itwould, however, also be possible to apply a small wheel instead of thetwo balls, this wheel being shiftable along the shaft 175, but notcapable of rotating with respect to this shaft, for instance because ofbeing coupled to the shaft by means of a key. The spring 170 thenpresses the disc 171 against the wheel, and the wheel is shifted alongthe shaft by means of an arm mounted on the traverse frame in order tochange the transmission ratio of the transmission gear.

Finally a form of the machine according to the invention will bedescribed in which the traverse frame is rigidly mounted, the spindleexecuting a translational motion away from the traverse frame as thediameter of the yarn package grows. Generally this form will be lessattractive than the form in which the traverse frame executes thetranslational motion, because the driving of a spindle which can beshifted away from the yarn package will present difficulties, whilst,moreover, the weight of the parts which must be shifted when thediameter of the yarn package increases, will be larger in the case ofthe spindle being shifted. In the design of the driving mechanism ofsuch a spindle care must be taken that no forces possessing componentsin the direction of the translational motion of the spindle are exertedon the spindle by this driving mechanism, as these components wouldinfluence the pressure on the yarn package. As a rule it would not befeasible to prevent the originating of such forces if either the drivingof the spindle or the coupling between the shaft of the traverse cam andthe spindle were effected by means of a system of three or more spurgears, mounted on two coupled arms, capable of swinging around the twoshafts to be coupled. The driving of a spindle capable of translationalmotion must, for the purpose of preventing the arising of such forces,be effected by means of gears coupling mutually perpendicular shafts,the gear mounted on the driving shaft being capable of shifting alongthis shaft, but not capable of rotating with respect to this shaft. Themounting of the spindle in such a way that it becomes capable ofeffecting a translational movement permits, however, the application ofa simple method for adapting the rotational speed of the spindle to thediameter of the yarn package. A winding machine in which such anadaption is effected is shown in Fig. 8. In this machine 117 is thespindle capable of rotating in hearings in a first frame 124. This frameis carried by two cylindrical bars 107 and 111 which are fixedlysupported in the second frame 828 of the machine. The first frame 124 iscapable of sliding along the bars 107 and 111 by means of bearings 108and 110, the said bars also carrying the traverse frame 101, which isrigidly mounted to these bars. The driving of the spindle is effected bymeans of a disc 171, which is capable of sliding longitudinally on thespindle, but which is not capable of rotating with respect to thisspindle, it being coupled to the spindle by means of a key. Spring 170presses the disc in the direction of the driving shaft 175. Between thisdisc and this shaft there are two balls 173 and 174 mounted so as to beuniversally rotatable in a ball carriage 172. The balls are supported inthis carriage by means of two cup shaped devices, in which they aresupported by means of small balls so as to be universally rotatable. Thespring 170 presses disc, balls and shaft together in such a way that atransmission of motion between the shaft and the spindle becomespossible. The ball carriage 172 is supported on the second frame of thewinding machine, so that the transmission ratio of the transmission gearconsisting of the d'sc, the balls and the shaft varies when the firstframe 124 is shifted along the bars 107 and 111 owing to the forcesexerted on the spindle as the yarn package builds up. In the first frame124 a swinging lever 120 is mounted in a similar way as in the machineaccording to Fig. 1. The lever 120 drives the traverse bar and is itselfdriven by a slide 128 which is moved to and fro along two guide rods 118by means of a traverse cam 119. The traverse cam. is mounted on a shaft123, which is rotatable in the first frame 124, and is driven by thespindle by means of the spur gears 127. In the same way as in themachine according to Fig. l, the lever will be caused to execute aswinging motion when the spindle is rotating, causing the traverse bar105 and the yarn guide 103 to move to and fro. During the winding thepressure roll 102 rests against the surface of the yarn package, whichconsequently will cause the spindle to move away from the traverse framewhen the diameter of the yarn package grows. The roller at the underside of the traverse bar 105 will then move nearer to the fulcrum 112 ofthe swinging lever 120, causing the traverse length to decrease.Moreover, the point of contact between the ball 173 and the disc 171will move away from the centre of the disc, causing the rotational speedof the spindle to be decreased. In this way it is possible to cause theyarn speed to be constant, but if, at a constant yarn speed equal to themaximum value the rotational speed of the spindle were to become toohigh for the traverse mechanism when the diameter of the yarn package issmall, then the construction according to the invention still permitsthe yarn speed to approximate more closely to a constant yarn speed thanwould be possible if the spindle were rotating at a constant speed. Thevarious forms of the machine according to the invention described aboveare also possible in the case of the machine according to Fig. 8. Anautomatic adjustment of the fulcrum 112, the winding of the yarn packagethe traverse length of which is smallest at the inside and also thewinding of a yarn package with constant traverse length would bepossible by applying the means described above. The machines accordingto the invention have been described in a form suitable for windingconical yarn packages, but it is obvious that these mais rotatablearound an axis which'is parallel to the said spindle, this beingfeasible in all constructions described. 1

In all forms of theinvention described it would, more over, be possibleto mount the traverse frame in such a way that its direction isadjustable so as to make'th'e machine suitable for winding cones ofvarious shapes as Well as cylindrical packages, for the coupling betweenthe traverse bar and the device directly driving -it is independent ofthe direction of the traverse frame. Furthermore, it would be possibleto mount the traverse frame in such a way that the direction of themotion of the traverse bar and the direction of the axis of the pressureroll, if such a device is present, are parallel to the'shaft aroundwhich the traverse cam rotates, also in the case of a conical yarn beingwound. The spindle must in this case be mounted in such a way that it isnot parallel to the shaft of the traverse cam.

In a winding machine according to the invention for winding conical yarnpackages and provided with a pressure roll, the best results areobtained when the axis of the spindle and the axis of rotation ofthepressure roll are situated in the same plane, this plane beingparallel to the direction of the relative translational motion ofspindle and traverse frame, for in this case the pressure roll will, inany relative position of spindle and traverse frame, rest against theyarn package along the full length of a generatrix of its surface. Ifsuch a machine does not possess'a pressure roll, the path described bythe point of contact between the yarn guide and the yarn package shouldpreferably be situated in a plane through the axis of the spindle andparallel to the direction of the relative translational motion ofspindle and traverse frame, for in this case the said path will coincidewith a generatrix of the surface of the yarn package in any relativeposition of spindle and traverse frame. If only cylindrical yarnpackages are to be wound it is not necessary for the said axis of thepressure roll and the path of the said point of contact to be situatedin the plane described, and in order to ensure that there will be acontact along a generatrix of the surface of the yarn package, or thatthe'said path will coincide with such a generatrix, it is suflicient forthe said ax s of the pressure roll or the said path of the point ofcontact to be parallel to the axis of the spindle.

In the above specification various forms according to the invention aredescribed, each of these forms being It is feasible according to theinvention to apply the same.

capable of winding a special shape of yarn package.

tatable around a shaft'which is situated on the same side I of thetraverse frame as the spindle, as well as a lever capableofswinging'about a shaft which is situated on the opposite'side'of thetraverse frame. In the case of drivingby means of the slide, moreover,it is immaterial.

whether the shaft; around which the lever swings, is supported by thefirst frame, or by thesecond traverse frame.

If the swinging lever is dismantled, and a suitable baris mounted on thetraverse bar, the same slide can cause. a traverse motion of thetraverse bar, with constant. traverse length. For this purpose the slidecould also be made to carry a bar Whichforms .a guide cooperating withthe roller at the underside of the traverse bar for instance, in thisway also bringing about a traverse motion with constant traverse length.A supporting lever for the fulcrum of the swinging lever, as shown inFig. 3, for thepurpose in the same winding machine, the measuresnecessary 7 for such allround application being little more than theprovision of some extra bolt holes.

A method for driving the traverse bar in such a way that the forcesdriving this bar are exerted centrally on it, thus reducing the frictionof the traverse bar in the traverse frame, is shown in Fig. 11. In thisfigure 101 is a section of the traverse frame, 105 a section of one endof the traverse bar, this end being provided with a cylindrical openingin which a cylindrical pin 109 can rotate. A cylindrical bar 179 iscapable of sliding through an opening in this pin and passes throughslots in the end of the traverse bar as well as in the traverse frame.The cylindrical bar is carried by the U-shaped swinging lever which isrotatably mounted on to the slide 123. This slide is capable of movingalong the guides 118. The

lower end of the slide 128 carriesa small roller 204 which is situatedin the slot of the traverse cam (not shown) driving the slide. The bar179 is capable of sliding in a block 180 which can swing about the shaft112. The figure needs no further elucidation. It would also be possiblefor the bar 179 to be only rotatable around the shaft 112, the U-shapedmember swinging lever 120 in this case possessing some kind of guide bymeans of which it cooperates with a coupling member on the slide 128.

Recapitulating, the followingmethods for driving the traverse bar in amachine according to the invention can be stated. Although other drivingmethods are feasible, the following methods are preferable for drivingthe traverse bar of a yarn winder for winding pineapple cones:

I. A lever is caused to swing about a shaft supported either on thefirst frame carrying the spindle or on the second traverse frame. It iscoupled to the traverse bar by means of a guide and a coupling elementcapable of sliding along the guide.

The lever also carries a guide which cooperates in a similar way with acoupling element on a slide moving to and fro along suitable guide rods,and cannot slide with respect to the shaft around which it is caused toswing.

II. The lever can slide with respect to the shaft around which it iscaused to swing and is coupled to the said slide by means of a couplingpermitting mutual rotation only, while it is coupled to the traverse barby means of a guide and a coupling element which together constitutes acoupling permitting relative rotation and sliding motion of the partcoupled.

III. The lever is coupled to 'the traverse bar by means of a jointpermitting mutual rotation only, the arm beingw, capable of rotatingaround as well as of shiftingalonga w shaft which is supported either bythe. traverse frameorwby the frame carrying thespindle.

The lever also carries a guide which cooperates with the couplingelement on a slide moving to and fro along suit-4 able guide rods. Thislatter coupling permitting arelative rotation and sliding motion of theparts coupled.

In the above specification the machine has. been de- I scribed as amachine for winding'textileyarns. It is obvious that it is capable ofwinding filaments, threadsor wires of any .type'providedthatthe'diameter is not too large.

What I claim is:

1. A winding machine for producingwoundfilament:

packages, comprising, in combination, a rotating spindles:- carrying anddriving a winding package, a rotating came 1' shaft geared to saidspindle and driven therewith,.a,recip+;3 rocating element driven by saidrotating camshaft; a firstz'i frame for mounting said spindle withsaidcamshaft andzr.

said reciprocating element, a thread guide, a secondxframe m movablecoupling having slidable guide means operatively connecting saidreciprocating element in said first frame with said thread guide in saidsecond frame to impart a reciprocating motion to said thread guide inresponse to reciprocating movement of said reciprocating element.

2. A winding machine for producing wound filament packages comprising,in combination, a rotating spindle carrying and driving a windingpackage, a rotating camshaft geared to said spindle and driventherewith, a slide, a guideway confining said slide to reciprocatingmovement along a fixed path during rotation of said camshaft, a firstframe supporting said spindle, said camshaft, said guideway, and saidreciprocating slide, a second frame having a trackway in parallel to theface of the package, a thread guide, a traverse bar supporting saidthread guide, said traverse bar being slidably supported in saidtrackway and constituting a primary guide means therewith, a secondguide means mounted in said first frame carrying said second frame andaccommodating a relative rectilinear translational motion of said firstframe and said second frame as the package builds up, a second barmounted upon said reciprocatlng slide having means defining another pathlying in a plane extending parallel to the rectilinear translationalmotion of said first and second frames and parallel to the center lineof said spindle, a coupling element carried by said traverse bar formovement along said fixed path, said second bar and said couplingelement being connected between said reciprocating slide in said firstframe and said traverse bar carrying said thread guide in said secondframe and imparting a reciprozating motion thereto.

3. A winding machine for producing wound filament packages comprising,in combination. a rotating spindle carrying and driving a windingpackage, a rotat'ng camshaft geared to said spindle and driventherewith, a slide, a guideway confining said slide to reciprocatingmovement along a fixed path during rotat'on of said camshaft, a firstframe supporting said spindle, said camshaft, said guideway, and saidreciprocating slide, a second frame having a trackway parallel to theface of the package, a traverse bar slidably supported in said trackway,a thread guide supported in sa d traverse bar, secondary guide meansmounted in said first frame and carrying said second frame, saidsecondary guide means accommodating relative rectilinear translationalmotion of said first frame and said second frame as the package buildsup, a second bar mounted upon said traverse bar having means defininganother path lying in a plane which extends parallel to the rectilineartranslational motion of said first and second frames and parallel to thecenter line of said spindle, a coupling element carried by saidreciprocating slide for movement along said fixed path, said second barand said coupling element connecting said reciprocating slide in saidfirst frame and said traverse bar carrying said thread guide in saidsecond frame and imparting a reciprocating motion thereto.

4. A winding machine for producing wound filament packages comprising.in combination, a rotating spindle carrying and driving a windingpackage, a rotating camshaft geared to said spindle and driventherewith, a slide, a guideway confining said slide to reciprocatingmovement along a first path during rotation of said camshaft, a firstframe supporting said spindle, said camshaft, said guideway, and saidreciprocating slide, a second frame having a trackway parallel to theface of the package, a thread guide, a traverse bar slidably supportedwithin said trackway and carrying said thread guide, said traverse barproviding a primary guide means for said thread guide, a secondary guidemeans mounted in said first frame and carrying said second frame, saidsecondary guide means accommodating relative rectilinear translationalmotion of said first frame and said second frame, a lever supported foroscillation Within a plane extending parallel to the plane of saidrelative rectilinear translational motion of said first and secondframes and parallel to the reciprocating motion of said slide, first,second, and third coupling means coupling said lever each to one of saidframes, said slide, and said traverse bar, respectively, each one ofsaid three coupling means accommodating relative rotation of said leverand the respective part coupled thereto, two of said three couplingmeans accommodating relative sliding motion of the respective coupledparts, and a driving connection between said reciprocating slide in saidfirst frame and said traverse bar carrying said thread guide in saidsecond frame imparting a reciprocating motion to said thread guide.

5. A winding machine for producing wound filament packages comprising,in combination, a rotating spindle carrying and driving a windingpackage, a rotating camshaft geared to said spindle and driventherewith, a slide, a guideway confining said slide to reciprocatingmovement along a fixed path during rotation of said camshaft, a firstframe supporting said spindle, said camshaft, said guideway, and saidreciprocating slide, a. second frame having a trackway parallel with theface of the package, a thread guide, a traverse bar slidably supportedwithin said trackway and supporting said thread guide, said traverse barconstituting a primary guide means for said thread guide, secondaryguide means mounted in said first frame and carrying said second frame,said secondary guide means accommodating relative rectilineartranslational motion between said first and second frames, a couplingsystem comprising a lever supported for oscillation within a planeextending parallel to a plane defined by said rectilinear translationalmotion of said first and second frames and parallel to the center lineof said spindle, first coupling means coupling said lever with saidfirst frame for relative rotation between said lever and said firstframe, second coupling means coupling said lever with said slide forrelative rotation and sliding motion of said lever and said slide, andthird coupling means coupling said lever with said traverse bar forrelative rotation and sliding motion of said lever and said traversebar, whereby said coupling system drivingly connects said reciprocatingslide in said first frame and said traverse bar carrying said threadguide in said second frame for imparting a reciprocating motion to saidthread guide.

6. A winding machine for producing filament packages comprising, incombination, a rotating spindle carrying and driving a winding package,a rotating camshaft geared to said spindle and driven therewith, aslide, a guideway confining said slide to reciprocating movement along afixed path during rotation of said camshaft, a first frame supportingsaid spindle, said camshaft, said guideway, and said reciprocatingslide, a second frame having a trackway parallel to the face of thepackage, a thread guide, a traverse bar slidably supported within saidtrackway, said traverse bar supporting said thread guide andconstituting a primary guide means therefor, a secondary guide meansmounted in said first frame and carrying said second frame, saidsecondary guide means accommodating relative rectilinear translationalmotion of said first and second frames, a coupling system comprising alever mounted for oscillation in a plane extending parallel to the planedefined by the rectilinear translational motion of said first and secondframes, and parallel to the center line of said spindle, first couplingmeans coupling said lever with said second frame for relative rotationof said lever and said first frame, second coupling means coupling saidlever with said slide for relative rotation and relative sliding motionof said lever and said slide, third coupling means coupling said leverwith said transverse bar for relative rotation and a relative slidingmotion of said lever and said traverse bar, said coupling systemdrivingly connecting said reciprocating slide in said first frame andsaid traverse bar and a reciprocating motionto said thread guide.

7. A winding machine producing filament packagescomprising,incombination, a rotating spindle carrying and driving a winding package,a rotating camshaft geared to said spindle and driven therewith, aslide, a guideway confining'said slide to reciprocating movementalong'afixed path during rotation of said camshaft, a first-framesupporting said spindle, said camshaft, -said guideway,- and said.reciprocating slide, a secondfrarne having a trackway parallelto theface of the package,- a thread guidefa traverse bar slidably supportedwithin said trackway,isaid traverse bar supportingsaid thread guide andconstituting primary guide means therefor, secondary guide means mountedin said firstframe and carrying-said secondframe, said secondary guidemeans accommodating relative rectilinear translational motion of saidfirst frame and said second frame, a coupling system comprisinga levermounted for oscillation within a planesextendingkparallel" to a planedefined by the rectilinear translational-motion of said first and secondframes. and-parallel to the center line of said spindle, firstcouplingmeans coupling said lever with said firstframepand-accommodating relative rotation and sliding motion of saidlever and said first frame, second coup'ing meanseoupling saidlever withsaid slide for relative rotation andsliding motion of said lever andsaid slide, third couplingmeans coupling said lever with said traversebar forrelative rotation of said lever and said traverse bar,-andrsaidcoupling system providing a driving connection between saidreciprocating slide in said first frame and said-traverse bar carryingsaid thread guide in said second frame and imparting a reciprocatingmotion to said thread guide in response to rotation of said c:mshaft. 1

8. A winding machine for producing filament packages comprising, incombination, a rotating spindle carrying and driving a winding pack ge,a rotating eamsh ft gearedito said spindleand driven therewith, a slide,a

guideway confining said s ide to reciprocating movement along a fixedpath during rotation of said camshaft, a first frame supporting saidspindlefsaid camshaft. said guideway, and said reciprocating slide, asecond frame having a trackway parallelto the face of the package, athread guide, a traverse bar slidably supported within said t'rackway,said traverse bar supporting said thread guidefand constituting aprimary guide means therefor, secondary guide means mounted in saidfirst frame and carrying said second frame, said secondary guide meansaccommodating relative rectilinear translational motion between saidfirst frame and said second frame as the package builds up, a couplingsystemcomprising a lever mounted for oscillation within aplane extendingparalel to the relative rectilinear translational motion of said firstand second frames and parallel to the center line of said spindle, firstcouplingmeans coupling said lever with said second frame andaccommodating relative rotation and sliding motion vtherebetween, secondcoupling means coupling said lever'with said slide'for relative rotationand sliding motion therebetween, and third coupling means couplingsaid'lver'and said traverse bar for relative rotation of said slide andsaid traverse bar, whereby said coupling system drivingly connects saidreciprocating slide in "said-firstframe and said traverse bar carryingsaid" thread guide in said second frame to impart a reciprocating motionto said thread guide in response to rotation of said camshaft.

9. 'A winding machine producing filament packages comprising,-incombination, a rotating spindle carryingv and,. driving a windingpackage, a rotating camshaft geared tosaid spindle and driventherewith,a slide, a

guideway confiningsaid slide to reciprocating movement along.afixedspath during rotation of said camshaft, a firsttrframe supportingsaid spindle, said camshaft, said guideway, and said reciprocatingslide,"a second framehaving a trackway parallelto the'face of thepackage,"

first frame, and carrying'said second frame, said sec-- ondary guidemeans accommodating-relative rectilinear translationalmotion of saidfirst and second frames, a

coupling system comprising a, lever mounted for 'oscillation within a'plane'extendingparallel to a plane defined by the relative rectilineartranslational motion of said first and secondframes and parallel to thecenter line of said spindle, first coupling means coupling said leverwith said first frame and accommodatingrelative rotation and slidingmotion therebetween, second coupling I means coupling *saidlever withsaid slide for'relative rotation between said lever and said slide,third coupling means coupling said lever with saidtraverse bar andaccommodating rotation and sliding motion therebetween, said couplingsystem drivingly connecting saidreciprocatingslide in said first frameandsaid traverse bar carrying said'thread guide in saidsecondframe toimpart a reciprocating motion to saidthread guide in re-- sponse torotation of said camshaft 10. A Winding machine for producing'fila'mentpack- 7 ages comprising, in combination, a rotating spindle carrying anddrivinga winding package, a rotating camshaft geared to saidspindle anddriven therewith, a slide, a guideway confining said slide toreciprocating movement along a fixed path during'rotation of saidcamshaft, a first frame supporting said spindle, said camshaft, saidguideway, and said reciprocating slide, a second frame having'a trackwayparallel to the face of the package, a thread guide, a traverse barslidably supporting said thread guide within said trackway, saidtraverse bar supporting'said thread guide, and consttuting a primaryguide means therefor, secondary guide means mounted in said first frameand carrying said second frame, said secondary guide means accommodatingrelative rectilinear translational-motion of said first frame and saidsecond frame, a coupling system comprisinga lever mounted foroscillation in a plane extending parallel to a plane defined by relativerectilinear translational motion of said first and second frames andparallel to the center line of saidspindle, first coupling meanscoupling'said leverwith said second frame'accommodating relativerotation and sliding motion between said lever andsaid second frame,second coupling means couplingvsaidv lever with ages comprising, incombination, a rotating spindle carrying and driving a winding package,a rotating camshaft, said camshaft beingtgeared to said spindle anddriven therewith, a slide, a guideway confining saidrslide toreciprocating movement .along a fixed=path during rotation of saidcamshaft; a first frame'supporting said spindle, saidcamshaft, saidguideway,:and said reciprocating slide,

a second frame having attrackway parallel to the-face of thepackage, athread guide, a traverse bar carrying said thread-guidasaidtraverse barbeingtslidably supported within said trackway andnconstituting-a primaryguide -means for said-thread guide,.'. secondary guide -means mounted insaid first-'frame and carryingwsaid second:f frame accommodatingrelative rectilinear translational motion of said first frame' 'andsecondzframe, a coupling system 'comprisinga lever mountedfor'oscillation within; -a planeeextending parallel to alplatierdefinedby therelay tive rectilinear translational motion of said first andsecond frames and parallel to the center line of said spindle, firstcoupling means coupling said lever to a part mounted for movement uponone of said frames, means automatically displacing said part withrespect to said frame in response to relative movement between saidfirst and second frames, second coupling means coupling said lever tosaid slide, third coupling means coupling said lever to said traversebar, each of said coupling means accommodating relative rotation of saidlever and the respective part coupled thereto, two of said couplingmeans accommodating relative sliding motion of the respective coupledparts, and said coupling system providing a driving connection betweensaid reciprocating slide in said first frame and said traverse barcarrying said third guide in said second frame to impart a reciprocatingmotion to said thread guide in response to rotation of said camshaft.

References Cited in the file of this patent UNITED STATES PATENTS1,659,127 Zindel Feb. 14, 1928 1,950,855 Lewis Mar. 13, 1934 2,372,136Swift et a1 Mar. 20, 1945 2,387,949 Siegenthaler Oct. 30, 1945 2,664,249Wright Dec. 29, 1953 2,670,146 Heizer Feb. 23, 1954 2,778,578 Keith Jan.22, 1957

